Subtract 10/81 from 5/4
1st number: 1 1/4, 2nd number: 10/81
5/4 - 10/81 is 365/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
5/4 = 5 × 81/4 × 81 = 405/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
10/81 = 10 × 4/81 × 4 = 40/324 - Subtract the two like fractions:
405/324 - 40/324 = 405 - 40/324 = 365/324 - In mixed form: 141/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4-10/81 5/4-20/81 5/8-10/81 15/4-10/81 5/4-30/81 5/12-10/81 25/4-10/81 5/4-50/81 5/20-10/81 35/4-10/81 5/4-70/81 5/28-10/81